Plowshare with removable point



Oct. '14 1924. 1,511,301

J. SANDERS PLOWSHARE WITH REMOVABLE POINT Filed May 28, 1923 gmwfozPatented Oct. 14, 1924.

JOHN SANDERS,

PATENT QFFEQE.

DENVER, COLORADO.

PLOWSHARE 1TH REMOVABLE POINT.

Application filed May 23, 1923.

To all whom it may concern:

Be it known that 1, JOHN SANDERS, a citizen of the United States,residing at Denver, in the city and county of Denver and State ofColorado, have invented certain new and useful Improvements inPlowshares with Removable Points; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to thecharacters of reference marked thereon, which form a part of thisspecification.

This invention relates to improvements in plowshares.

It is well understood by those versed in the art of agriculture thatplowshares are subject to rapid wear and that they have frequently gotto be removed for the purpose of sharpening the point and edges thereof.The part known as the point of the share is subject to the greatest wearand is often broken and bent, owing to the presence of rock in the land.

It is the object of this invention to produce a plowshare that shall beso constructed that the point thereof can be readily removed, when wornor damaged, and replaced by a new or different point.

I am aware that removable or replaceable plow points have been made andI am therefore not claiming to be the first one to have invented thiscombination in its broadest aspect, but I have invented a new andimproved plowshare in which the point is applied and removed in adifferent manner than that employed in connection with any similardevices known to me, my invention therefore being in the nature of animprovement.

In order to better and more clearly describe my invention, I shall havereference to the accompanying drawing in which the preferred formthereof is shown, and in which:

Fig. l is a top plan View of my improved plowshare;

Fig. 2 is a bottom plan view taken looking in a direction perpendicularto the share side;

Fig. 3 is a section taken on line 3--3, Fig. 1;

Fig. 4 is a top plan view of the front Serial no. 641,909.

end of my improved plowshare, the point thereof being removed; and

Fig. 5 is a view looking in the direction of the arrow 5 in Fig. 2.

The same reference characters will be used to designate the same partsthroughout the several views.

Numeral 1 designates my plowshare as a whole and 2 designates theremovable point. The plowshare comprises share side 3 which has acutting edge 4 and a landside 5 which has a removable plate 6 securedthereto by rivets or bolts 7. This plate can be replaced when worn.Plate 6 terminates short of or to the rear of the point 8 of the shareand has a forwardly projecting portion 9 whose function will hereinafterappear. The share side of the plowshare is offset on line 10 near thepoint thereof. The extent of this offset is: equal to the thickness ofthe material of the point. An opening 11 is provided in the share at theoffset. Directly over the opening a tongue 12 projects forwardly a shortdistance. Near the point of the share there is a keyhole-shaped opening13 with the enlarged circular part to the front thereof. The point 2 hasa share portion 1 1 and a landside portion 15 which has at its rearend-a notch for the reception of the projecting part 9. The shareportion 14 is provided at its rear end with a tongue or finger 1.6 whichis slightly curved and offset in the manner shown in Fig. 3. The finger16 is adapted to be inserted through or into the opening 11 (Fig. Arivet 1'? projects through the share portion 1d and extends below thesame a short distance. The ower end of the rivet is provided with arounded head 18 which is of such adiameter that it will freely throughthe enlarged portion of the keyhole slot, th narrower portion of whichis of a wid h equal to the diameter of the bolt. The relationship of therivet, the keyhole shaped opening 13, the rivet 17 and the finger 16 issuch that after the finger 16 has been inserted in the hole 11 a shortdistance, the head 18 of the rivet 17 can be inserted into the opening13, after which the point 2 is slid rearwardly as far as it will go. Asthe point is moved rearwardly the rivet 17 will slide into the nar rowslot portion of the keyhole opening 13, and when the parts are inoperative position, the lower surface of finger 16 will act as a lock asit engages the-front edge of the opening 11. As the point 2 is neversubjected to any strain, tending to move it forwardly, but almostexclusively to a force, tending to move it rearwardly, it will besecurely held in place.

In order to enable the point 2 to be readily removed, I provide anopening 19in the part 3 a short distance to the front of the opening 11and an opening 20 in the part 14. The opening 20 is slightly to the rearof the opening 19 when the parts are in their assembled position (Fig.When the point is to be removed, a rod or bolt 21 is inserted throughholes 19 and 20 and used as a lever for moving the point forwardlyagainst the locking action of the finger 16. The underside of the share3 is cut away at 22 so as to provide a space for the finger 16.

It will be seen from the above description that with a plowshareconstructed in accordance with my invention, the point can readily beapplied and removed and that the plowshare will not have any partsthereof of undue thickness after the point-is in place. Where the pointsare secured to the share without first offsetting the same, the pointwill be exceedingly clumsy and will not scour properly. With myconstruction, the share will have a smooth upper surface and thelandside will also present a plane surface. The point can be applied andremoved without the use of wrenches and other tools, the only toolnecessary being the rod 21 and a hammer. I want to call particularattention to the means employed for holding the point in place,th'etongue 16, which serves as a lock, the rivet 17, which engages with thekeyhole-shaped opening 13, and the projection 9, all of which means Iverily believe to. be'new in this particular combination.

Having now described my invention, what I claim as new is:

1.. A plowshare having the front end of the shareside thereof ofiset,the landside of the share having a removable plate secured thereto, theshareside having an opening at the offset, and a keyhole-shaped openingbetween the first named opening and the front end of the plowshare, aremovable point having a share portion, a landside portion, a fingeradapted to cooperate with the first named opening and a rivet adapted'tocooperate with the keyhole-shaped opening for holding the point in placein the share.

terlocking means between the landside por- 7 tion of the plowshare andthe point.

3. A plowshare having the front end of the shareside thereof offset, thelandside of the share having a removable plate secured thereto, theshareside having an opening at the ofiset, the rear side of said openinghaving a forwardly extending portion, a keyhole-shaped opening in frontof said last named opening, a removable landside porlion secured to theplowshare, a removable point provided with a tongue adapted to enwiththe first named opening, .a rivet adapted to cooperate with thekeyholeshaped opening, a landside portion adapted to supplement theportion on the plowshare, interlocking means on said landside portion,and means on the finger for engaging the for "ard edge of the firstnamed opening to hold the point in place.

4-. A plowshare having the front end of v the shareside thereof offset,the landside of the share having a removable plate secured thereto, theshareslde having an, opemng at the offset, the rear side of said openinghaving a forwardly extending portion, a keyhole-shaped opening m-frontof said last named openlng, a removable landslde portion secured to theplowshare,: a removable point provided with a tongue adapted to engagewith the first named opening, a rivet adapted to cooperate with thekeyholeshaped opening, a landside portion adapted to supplement theportion on the plowshare, interlocking means on said landside portion,and means on the finger for engaging the forward edge of the first namedopening to hold the point in place, said plowshare and point havingholes that are eccentric in their normal position and adapted to receivea tool, whereby the point may be moved relative to the share.

in testimony whereof I aiiix my signature.

JOHN SANDERS.

